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explain a data flow diagram and a use case diagram on the Library management system. Command data Command data Student DATA FLOW DIAGRAM (DFD) Student

explain a data flow diagram and a use case diagram on the Library management system.

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Command data Command data Student DATA FLOW DIAGRAM (DFD) Student data Handle details Modify/ Maintain Insert OK Command data Student Command LIBRARY STAFF Student Issue Use Case Diagram Check Account Reserve Store details Return Login Book search Reserve book Search for book Return book Display Update Update Renew book Report invalid IDs Reserve Issue Issue Check out book - REPORTS Display status Return Add book Delete book Display status Collect BOOKS Edit book /title OKI Librarian

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